package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.JwtClaimsConstant;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.dto.PasswordEditDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordEditFailedException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;
import java.util.List;

@Service
@Slf4j
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     * @param employeeLoginDTO
     * @return
     */
    @Override
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (StatusConstant.DISABLE .equals(employee.getStatus()) ) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    /**
     * 员工新增
     * @param employeeDTO
     */
    @Override
    public void saveEmp(EmployeeDTO employeeDTO) {
        Employee employee =new Employee();
        BeanUtils.copyProperties(employeeDTO,employee);

        String password= DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes());
        employee.setPassword(password);
        employee.setCreateTime(LocalDateTime.now());
        employee.setUpdateTime(LocalDateTime.now());

        Long empId = BaseContext.getCurrentId();
        employee.setCreateUser(empId);
        employee.setUpdateUser(empId);

        employee.setStatus(StatusConstant.ENABLE);

        employeeMapper.saveEmp(employee);
    }

    /**
     * 员工查询
     * @param employeePageQueryDTO
     * @return
     */
    @Override
    public PageResult page(EmployeePageQueryDTO employeePageQueryDTO) {

        PageHelper.startPage(employeePageQueryDTO.getPage(),employeePageQueryDTO.getPageSize());
        Page<Employee> employees=employeeMapper.page(employeePageQueryDTO.getName());
        List<Employee> result = employees.getResult();
        long total = employees.getTotal();
        return new PageResult(total,result);
    }

    /**
     * 根据员工id查询员工
     * @param id
     * @return
     */
    @Override
    public Employee getEmpById(Long id) {
        return employeeMapper.getEmpById(id);
    }

    /**
     * 员工修改
     * @param employeeDTO
     */
    @Override
    public void updateEmp(EmployeeDTO employeeDTO) {
        Employee employee=new Employee();
        BeanUtils.copyProperties(employeeDTO,employee);
        Long id = BaseContext.getCurrentId();
        employee.setUpdateUser(id);
        employee.setUpdateTime(LocalDateTime.now());
        log.info(employee.toString());
        employeeMapper.updateEmp(employee);
    }

    /**
     * 员工启用禁用
     * @param status
     * @param id
     */
    @Override
    public void startOrStop(Integer status, Long id) {
        Long updateUser = BaseContext.getCurrentId();
        Employee employee = Employee.builder().status(status).id(id).updateTime(LocalDateTime.now()).updateUser(updateUser).build();
        employeeMapper.updateEmp(employee);
    }


}
